asp.net - Telerik: Unable to get value of property 'open': Object is null or undefined -

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i've got web site uses telerik controls. have editing form opens in radwindow. functionality exists on 2 separate pages 1 works second radwindow never opens. i've stared , stared @ 2 pages trying figure out went wrong cannot figure out.

errors:

1.) telerik.web.ui.webresource.axd:3

uncaught typeerror: cannot set property 'control' of undefined

2.) telerik.web.ui.webresource.axd:11319

uncaught typeerror: cannot call method 'open' of undefined

this 1 has legible code.

window.radopen=function(b,a){var c=getradwindowmanager(); return c.open(b,a);//error here

page radwindow components:

 <telerik:radwindowmanager id="radwindowmanager2" runat="server" modal="true" showcontentduringload="false">     <windows>         <telerik:radwindow runat="server" id="rweditcust" width="500px" height="500px" title="edit cust" modal="true" reloadonshow="true"></telerik:radwindow>     </windows> </telerik:radwindowmanager>   <telerik:radajaxmanagerproxy id="rampcustlist" runat="server">   <ajaxsettings>     <telerik:ajaxsetting ajaxcontrolid="rampcustlist">         <updatedcontrols>             <telerik:ajaxupdatedcontrol controlid="rgcustlist" />         </updatedcontrols>     </telerik:ajaxsetting> </ajaxsettings> </telerik:radajaxmanagerproxy>  <telerik:radcodeblock id="radcodeblock1" runat="server">  <script type="text/javascript">      function showeditcust(id) {       alert("test");       window.radopen("editcust.aspx?a=e&id=" + id, "rweditcust");       return false;     }      function refreshgrid(arg) {       var ajaxmanager = $find("<%= radajaxmanager.getcurrent(this.page).clientid %>");       ajaxmanager.ajaxrequest();     }  </script> </telerik:radcodeblock>

conventional wisdom has issue view page bc i'm not getting errors in code behind page. components seem loading correctly otherwise other page break well. appreciated.

udpate

in design view error on radajaxmanagerproxy it's missing runat=server have attribute.

resolved above error. no effect on primary issue.

turns out commented piece of code in view causing error. removed commented code , issue resolved.


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